I’ve often wondered this, and now I have my answer. But before I throw it out, want to take a guess on how many hours it takes to fly the longest commercial passenger flight in the world? My personal record is a gut wrenching 12 hours on a nonstop Moscow to Los Angeles Aeroflot trek. And none of the TV screens worked.

According to a recent USA Today article, the longest flight currently in operation is from Los Angeles to Singapore on Singapore Airlines, clocking in at a grueling 18 hours and 30 minutes.